The second week will produce even more action.
We have seen a number of expected stars come through. Michael Phelps was dominant again, finishing his Olympic career (at least for now) with 23 gold medals. Katie Ledecky was also incredible in the pool. Usain Bolt was the world's fastest man, beating Justin Gatlin in the 100 meters. Andy Murray was his second straight gold medal in men's singles.
There was new faces making noise too. Simone Manuel, Maya Dirado and Lilly King shined in swimming. Monica Puig was the surprise gold medal winner in women's tennis.
The biggest early surprise was the US women's soccer team losing to Sweden in the quarterfinals.
It has been fun to see the athletes performing well in Rio.